/Engine/Plugins/Interchange/Runtime/Source/Parsers/GLTFCore/Public/GLTFMeshFactory.h
[TArray](API\Runtime\Core\Containers\TArray)< [FMeshFactory::FIndexVertexIdMap](API\Plugins\GLTFCore\FMeshFactory\FIndexVertexIdMap) > & GetPositionIndexToVertexIdPerPrim() const